Naslov
Assessment of CROPOS GNSS stations stability after the Petrinja 2020-2021 earthquake series

Autori
Šugar, Danijel ; Blagus, Luka ; Bačić, Željko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, pp prezentacija, znanstveni

Izvornik
Seminář s mezinárodní účastí DRUŽICOVÉ METODY V GEODÉZII A KATASTRU, Sborník abstraktů / Weigel, Josef ; Berková, Alena - Brno, Češka : ECON publishing, Brno, Češka Republika, 2023, 11-11

ISBN
978-80-86433-79-0

Skup
25th GNSS Seminar

Mjesto i datum
Brno, Češka Republika, 02.02.2023

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Earthquake, GNSS, CROPOS, PPP, stability, permanent displacement

Sažetak
The wider area of the town of Petrinja along with the region of Banija in North-Western Croatia was hit by the earthquake series in December 2020. The series started with the M5.2 earthquake on 28 December 2020 and continued the day after with the mainshock being of M6.4 causing 7 human casualties and huge damage to buildings and infrastructure. That earthquake was felt and reported by humans in the area more than 600 km away from the epicenter. CROPOS as a permanent GNSS network at the time of the earthquake series consisted of 33 stations installed on the Croatian territory among which the SISA station was the closest one to the epicentral area. Static daily observation files from the SISA station along with data from 6 surrounding stations were processed and results were analyzed to assess their stability and possible permanent displacement. The dataset timeframe consisted of one day before the earthquake series and 17 days after its onset. In that time window occurred numerous quakes, 8 of them having M ≥ 4.5. Observation data were processed by static PPP method using two different web services, CSRS-PPP and Trimble RTX. The results have shown a permanent displacement of the SISA station: 5.5 cm horizontally, and -2.5 cm vertically.

Izvorni jezik
Engleski

Znanstvena područja
Geofizika, Geodezija

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